It is going to ve very tough, as they have a better team than you. Obviously, LTNT is a must. After that, you have to hope for the best. They have a better lineout than you, but that doesn't mean you kicking is a bad idea, just that you are unlikely to pinch the ball off them. Sometimes, playing against a better team it is a good idea to kick quick alot, so you are not playing and getting turned over in your own half so much. After that, it depends how much risk you want to take - if you want to go for it and have reasonable handling then perhaps up your creativity - but the risk is you just give possession to them when you bugger up. You could go the opposite and play safe, with plenty of P&G hoping to keep the ball for longer and make small gains. I don't think there is a 'best' way, but others might have some good ideas.